Functions & Defined Operations

A function or defined operation is a rule that transforms inputs; unfamiliar notation becomes manageable once the rule is followed consistently.

What you'll learn

  • Interpret a function as an input-output rule rather than multiplication.
  • Use a stated definition to evaluate a custom operation with ordered inputs.
  • Evaluate nested functions and operations from the inside outward.
  • Represent a function with a rule, table, or mapping while preserving one output per input.
  • Turn a known function output into an equation and solve for the input.

Before you start

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